package com.geovis.boot.service.demo.file.service;


import com.geovis.boot.service.demo.file.entity.SysUser;

import java.util.List;

/**
 * (SysUser)表服务接口
 *
 * @author makejava
 * @since 2020-10-29 14:18:57
 */
public interface UserService {

    /**
     * 通过ID查询单条数据
     *
     * @param user_id 主键
     * @return 实例对象
     */
    SysUser queryById(Integer user_id);

    SysUser queryByUserName(String userName);




}